Certainly–no issues tend not to involve any improve to The fundamental term buy; instead, the very low (L) tone of the final syllable in the utterance is replaced with a slipping (HL) tone.???????????? ????? ????????? ???? ??????? ?????? ?????????? ??????? ????? ????? ???, ?????? ???????? ??????? ??????? ????? ???? ???? ???? (?????????) ??? ???,